Portable winch



April 6 1926.

B. P. JOYCE PORTABLE WINCH Filed Sept. 6, 1923 IN VEN TOR .151 E11-{Brigue} Patented Apr. `6, 1926.Y

ururlfii) STATES BRYAN P. JOYCE, OF DAVENPORT, IOWA, ASSIGNOR To THOMAS A. CONLON, OE SILVER SPRING, nraRYLaND.l

PORTABLE WINCH.

y lApplication led September 6, 1923. vSerial No. 661,268.

(GRANTEDUNDE THEVACT 0F MARCH 3, 1883; 22 STAT. L. 625.)

T 0 ,all whom t mag/concern: f

Be it known that I, BRYAN I. JOYCE, a citizen of the United States, Vand -aresident of Davenport, county of Scott, and State of Iowa, have invented an Improvement in Portable `Winches, of which the following is a specification'.

VlrThe Vinvention. described herein ma. be4

used by the Government, or any of its o eers or employees in prosecution of work for the Government, or by any other person in the United States, wlthout payment to me of anyroyalty thereon, in accordance with the act of March 3', 1883.

The present invention relates to ,portable` winches and particularlyk to Vthat type of hoisting device used for moving a gun on and off its carriage for transport purposes. The primary object of this invention -is the provision of such means which may be actuatedby a member or members of the gun crew and which through the intermediation of differential gearing will effect any desired reduction or'change in direction between the hoisting mechanism and the actuating means therefor.

Another object is the provision of a hoisting device which will be compact in form and cheap of manufacture.

IVithvthe foregoing and other objects in view, my invention resides in the novel arrangement and eombination'of parts and in the details of construction hereinafter described andv claimed, it being understood that changes in the precise embodiment of the invention herein disclosed ymay be made within the scope of what is claimed without departing from the spirit of the invention..

A practical embodiment of the invention is villustrated in the accompanying drawing, wherein: l

Fig. 1 is a view in side elevation of my hoisting device;

Fig. 2 is a section on the line 2-2 of Fig. 1; and Fig. 3 is a section on the line 3--3 of Figi 2. .fifi

Referring to the drawing by numerals of reference: i I have shown'at 5 a winch having a; proporting bracket 8 for securingthe winch in position on a' transport wagon or limber.

The`winch is formed by side plates y9- and 10 mounted 'on a shaft 11. The plate 9 through the projections 6 is firmly anchored against'rotation on the support. The plate l() is rotatably mounted on the shaft 11. for a. purposeehereinafter to be described.y The shaft 11 may be rotated in thev usual manner by a crank or cranks, not shown.

In the preferred embodiment of my invention the plate 10 is provided with an annular flange 12 formed with a groove 13. A hoistingelement such as a yrope or chainlil is provided which vis adapted to be wound in PivrEN'r OFFICE.

keo

said vgroove for elevating the gun from'its cradle. v

The-hoisting element may be attached to f the winch in any suitable manner. In practice I have found it preferable `to line the groove 13 with a fabric strip 15 of high frictional coefiicient such as a piece of brake lining. A few turns of the rope or chain 14: are taken about the groove and the fric- Vplate 9. Keyed to the shafts 18 are other gears 2O meshing with anannular gear 21 fixed to the plate 10.

By using different speed ratios the rope or chain may bel wound on` the winch at a greater or less speed than that.y at which the shaft 11 is rotated or may be .wound on ysaid winch in a different direction from that taken by the shaft 11 in its movement. Col- 1ars23 are secured to either end of the shaft 11 to maintain the members in their assembly and a late 24; secured to the plate 9 Serves as a ust guard. Y

In use one end of the ropegflf is attachedto the gun trail and the winch actuated to wind the rope on the flange 12 and lift the trail. l'lhen the slides of thegun carriage are brought to the saine level with the slides on the transport Wagon, the gun may be readily slid olif its carriage for transport.

yWhile particularly*adapted for this use,'it

is obvious the Winch ol this invention Ais capable oit' employment in many other` ways as a hoisting device.

l claiin:

l. ln a portable winch, a rotatable shaft, a lixed plate in which said shaft rotates, a second plate rotatably mounted on said shaft, a flange Von said second plate, `said plates cooperating` to 'form ahousing,fannu lar gears secured to said platesfiespeetively, a pinion aii'ixed tosaidlshath'fagear mounted in said housing and meshing ivitli `'said pinion and one of said annular gears, .a second gear actuated by said first gear and meshing with the other ot' said vannular llargears enthefrespeetive plates, a pinion atlixed to said shaft, a gear inounted in said housing and meshing with said pinioni'and with one ol' 'said annular gears, a second meshing With the' other of `said annular gears, *the lmembers Jet said .gear train cooperating toitransmitrot-atien of said shaft in a different phase to said second-plate.

ylwRYl/lhl iP. JOYCE. 

